A.13.2.
Fomblin Z25

PRODUCT

Type

Oil

Chemical Composition

Perfluoralkylether

Manufacturer

Ausimont Deutschland GmbH

Parsevalstrasse, 6

D-06749 Bitterfeld

Germany

Tel: +49 3493 79 0

Fax: +49 3493 79 102

Email: service@ausimont.de

www.ausimont.de

EXPERIENCE & AVAILABILITY

Development Status

Available as raw stock Z; Limited laboratory production of Z25 available from ESTEC.

Cost Range

High

Lot Reproducibility

Good

Space Experience

Limited in Europe; wider in USA as Bray Micronic 815Z

GENERAL PROPERTIES (Physical, Mechanical, Thermal, Electrical, Optical)

Nature

Typical Value

Remarks

Kinematic Viscosity

250 50 cps

140 30 cps

45 10 cps

@ 20C

@ 38C

@ 99C

ASTM Slope

0.30 0.3

 

Viscosity Index

360 10

 

Extrapolated Vapour Pressure

< 5 x 10-12 torr

5 4 x 10-9 torr

5 4 x 10-6 torr

@ 20C

@ 93.3C

@ 204.4C

Pour Point

-60 10C

 

Specific Gravity

1.85 0.05

 

Volatility Los

<0.1%

149C 22 h

Interfacial Tension

40 5 mN/m

ASTM D971

Average Molecular Weight

15000

 

PROPERTIES RELEVANT TO SPACE USE (Effects of and/or on environment)

Nature

Typical Value

Type of Test

Outgassing

TML = 0.06%, RML = 0.05%, CVCM = 0.01%

ECSS-Q-70-02

SPECIAL RECOMMENDATIONS

          May show some undesirable reaction to metal surfaces after long-term operation.

          Any long-term use should be discussed with the European Space Tribology Laboratory (ESTL) before the design is finalised.